gmmproc: Allow some classes to be in a sub-namespace.

	* tools/m4/class_shared.m4:
	* tools/generate_wrap_init.pl.in: Add a _GMMPROC_EXTRA_NAMESPACE(thenamespace)
	macro, so that wrap_init.cc will have the correct pre-declarations of the
	wrap_new() and get_type() functions.
	I am suprised that we have no other way to do this already, but I cannot
	find one, and this hack works.
	For instance, this lets use put some classes in a Gio::DBus namespace.

1 files changed, 75 insertions, 0 deletions

diff --git a/gio/src/dbuserrorutils.hg b/gio/src/dbuserrorutils.hg
new file mode 100644
index 00000000..f7f8707d
--- /dev/null
+++ b/gio/src/dbuserrorutils.hg
@@ -0,0 +1,75 @@
+// -*- Mode: C++; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+
+/* Copyright (C) 2010 The giomm Development Team
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+_DEFS(giomm,gio)
+
+namespace Gio
+{
+
+namespace DBus
+{
+
+namespace Error
+{
+
+/** Checks if @a error represents an error received via D-Bus from a remote
+ * peer.  If so, use get_remote_error() to get the name of the error.
+ *
+ * @param error A Glib::Error.  
+ * @return <tt>true</tt> if error represents an error from a remote peer,
+ * <tt>false</tt> otherwise. 
+ * @newin{2,28}
+ * @ingroup DBus
+ */
+bool is_remote_error(const Glib::Error& error);
+
+/** Gets the D-Bus error name used for @a error, if any.
+ *
+ * This function is guaranteed to return a D-Bus error name for all
+ * Glib::Error instances returned from functions handling remote method calls
+ * (e.g. Gio::DBusConnection::call_finish()) unless strip_remote_error() has
+ * been used on @a error.
+ *
+ * @param error A Glib::Error.
+ * @return An allocated string or <tt>0</tt> if the D-Bus error name could not
+ * be found.
+ * @newin{2,28}
+ * @ingroup DBus
+ */
+Glib::ustring get_remote_error(const Glib::Error& error);
+
+/** Looks for extra information in the error message used to recover the D-Bus
+ * error name and strips it if found. If stripped, the message field in @a
+ * error will correspond exactly to what was received on the wire.
+ *
+ * This is typically used when presenting errors to the end user.
+ *
+ * @param error A Glib::Error.  
+ * @return <tt>true</tt> if information was stripped, <tt>false</tt>
+ * otherwise. 
+ * @newin{2,28}
+ * @ingroup DBus
+ */
+bool strip_remote_error(Glib::Error& error);
+
+} // namespace Error
+
+} // namespace DBus
+
+} // namespace Gio